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Inventories | 6 Months Ended
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Jun. 30, 2017
Inventory, Net [Abstract] |
Inventories | INVENTORIES Centrus holds uranium at licensed locations in the form of natural uranium and as the uranium component of low enriched uranium (“LEU”). Centrus also holds separative work units (“SWU”) as the SWU component of LEU at licensed locations (e.g., fabricators) to meet book transfer requests by customers. Fabricators process LEU into fuel for use in nuclear reactors. Components of inventories follow (in millions):
| June 30, 2017 |  | December 31, 2016
| Current Assets |  | Current Liabilities (a) |  | Inventories, Net |  | Current Assets |  | Current Liabilities (a) |  | Inventories, Net
Separative work units | $ | 69.1 |  |  | $ | 10.8 |  |  | $ | 58.3 |  |  | $ | 115.8 |  |  | $ | 15.2 |  |  | $ | 100.6 |
Uranium | 34.7 |  |  | 16.0 |  |  | 18.7 |  |  | 61.4 |  |  | 42.3 |  |  | 19.1 |
Materials and supplies | 0.2 |  |  | — |  |  | 0.2 |  |  | 0.2 |  |  | — |  |  | 0.2 |
| $ | 104.0 |  |  | $ | 26.8 |  |  | $ | 77.2 |  |  | $ | 177.4 |  |  | $ | 57.5 |  |  | $ | 119.9 |
(a) | Inventories owed to customers and suppliers, included in current liabilities, include SWU and uranium inventories owed to fabricators.

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- Definition The entire disclosure for inventory. Includes, but is not limited to, the basis of stating inventory, the method of determining inventory cost, the classes of inventory, and the nature of the cost elements included in inventory. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.6) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6361739&loc=d3e7789-107766 + Details
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- References No definition available. + Details
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